It is provided a renewable energy base station, which is used in a wireless cellular system, including: an adjustment request determining part for determining whether an adjustment to a coverage area is required; an adjustment request transceiver in case where it is determined that the adjustment to the coverage area is required, sending a coverage area adjustment request to neighboring base stations in the wireless cellular system, and receiving an adjustment request response from the neighboring base stations; an adjustment request responding part for determining whether the coverage area adjustment request from the one of the neighboring base stations is allowed in case where receiving the coverage area adjustment request from one of the neighboring base stations; and a response transmitter for sending the adjustment request response to the neighboring base stations based on a result of the determination made by the adjustment request responding part.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A renewable energy base station, which is used in a wireless cellular system, comprising: an adjustment request determining part for determining whether an adjustment to a coverage area of the renewable energy base station is required based on at least one of network resource usage information of the renewable energy base station and storage battery electric power information of the renewable energy base station; an adjustment request transceiver, in a case where it is determined that the adjustment to the coverage area of the renewable energy base station is required, sending a coverage area adjustment request to neighboring base stations in the wireless cellular system, and receiving an adjustment request response from one or more of the neighboring base stations; an adjustment request responding part for determining whether the coverage area adjustment request from the one or more of the neighboring base stations is allowed based on at least one of the network resource usage information and the storage battery electric power information of the renewable energy base station in a case where receiving the coverage area adjustment request from one of the neighboring base stations; and a response transmitter for sending the adjustment request response to the neighboring base stations based on a result of the determination made by the adjustment request responding part, wherein the network resource usage information includes information indicating a used amount of a network resource of the renewable energy base station, and the storage battery electric power information includes information indicating a remaining electric power of the storage battery of the renewable energy base station, and in a case where the used amount of the network resource of the renewable energy base station is less than a predetermined first threshold value and the remaining electric power of the storage battery of the renewable energy base station is greater than a predetermined second threshold value, the adjustment request responding part determines that the coverage area adjustment request from the one of neighboring base stations is allowed.
2. The renewable energy base station according to claim 1 , wherein at least one of a case where a network resource of the renewable energy base station is insufficient and a case where the electric power of the storage battery of the renewable energy base station is insufficient, the adjustment request determining part determines that the adjustment to the coverage area of the renewable energy base station is required.
3. The renewable energy base station according to claim 1 , wherein: at least one of a case where the used amount of the network resource of the renewable energy base station is greater than a predetermined third threshold and a case where the remaining electric power of the storage battery of the renewable energy base station is less than a predetermined fourth threshold, the adjustment request determining part determines that the adjustment to the coverage area of the renewable energy base station is required.
4. The renewable energy base station according to claim 1 , wherein the adjustment request determining part calculates an outage probability of the renewable energy base station based on the network resource usage information and the storage battery electric power information of the renewable energy base station, and determines that the adjustment to the coverage area of the renewable energy base station is required when the outage probability is greater than a predetermined fifth threshold value.
5. The renewable energy base station according to claim 1 , wherein in a case where a network resource of the renewable energy base station is sufficient and the electric power of the storage battery of the renewable energy base station is sufficient, the adjustment request responding part determines that the coverage area adjustment request from the one of neighboring base stations is allowed.
6. The renewable energy base station according to claim 1 , further comprising: an adjustment processing determining part for determining whether the coverage area is able to adjust based on the adjustment request response from the neighboring base stations; and an adjustment processing part for determining, in a case where it is determined that the coverage area is able to adjust, at least one of an adjustment amount to the coverage area of the renewable energy base station and an adjustment amount to the coverage area of each of the neighboring base stations, and collaborating with the adjustment processing part of the neighboring base stations to perform adjustment processing to the coverage areas.
7. The renewable energy base station according to claim 6 , wherein the adjustment processing part notifies the neighboring base stations of the determined adjustment amount to the coverage area of the each of the neighboring base stations, and decreases the coverage area of the renewable energy base station based on the determined adjustment amount to the coverage area of the renewable energy base station after the coverage area of the each of the neighboring base stations is increased based on the received adjustment amount to the coverage area of the each of the neighboring base stations.
8. The renewable energy base station according to claim 6 , wherein the adjustment processing part increases the coverage area of the renewable energy base station based on the adjustment amount to the coverage area of the renewable energy base station received from the neighboring base stations.
9. A coverage adjustment method for a renewable energy base station, which is performed in a wireless cellular system including a renewable energy base station, the coverage adjustment method including: an adjustment request determining step of determining, by the renewable energy base station, whether an adjustment to a coverage area of the renewable energy base station is required based on at least one of network resource usage information of the renewable energy base station and storage battery electric power information of the renewable energy base station; an adjustment request receiving and sending step of, in a case where it is determined that the adjustment to the coverage area of the renewable energy base station is required, the renewable energy base station sending a coverage area adjustment request to neighboring base stations in the wireless cellular system and receiving an adjustment request response from one or more of the neighboring base stations; an adjustment processing determining step of determining, by the renewable energy base station, whether the coverage area is able to adjust based on the adjustment request response from the one or more neighboring base stations; an adjustment processing step of determining, by the renewable energy base station, in a case where it is determined that the coverage area is able to adjust, at least one of an adjustment amount to the coverage area of the renewable energy base station and an adjustment amount to the coverage area of the neighboring base stations, and collaborating with the neighboring base stations to perform adjustment processing to the coverage areas, an adjustment request responding step of determining, by the each of the neighboring base stations whether the coverage area adjustment request from the renewable energy base station is allowed based on the network resource usage information and the storage battery electric power information of the each of the neighboring base stations in a case of receiving the coverage area adjustment request from the renewable energy base station; and a response sending step of sending, by each of the neighboring base stations, the adjustment request response to the renewable energy base station based on a result of the determination made in the adjustment request responding step, wherein the network resource usage information includes information indicating a used amount of a network resource of the base station, and the storage battery electric power information includes information indicating a remaining electric power of the storage battery of the base station, and wherein the adjustment request responding step includes a step of determining, by the each of the neighboring base stations, that the coverage area adjustment request from the one of neighboring base station is allowed in a case where the used amount of the network resource of the each of the neighboring base stations is less than a predetermined first threshold value and the remaining electric power of the storage battery of the each of the neighboring base stations is greater than a predetermined second threshold value.
10. The coverage adjustment method for a renewable energy base station according to claim 9 , wherein the adjustment request determining step includes step of determining, by the renewable energy base station, that the adjustment to the coverage area of the renewable energy base station is required at least one of a case where a network resource of the renewable energy base station is insufficient and a case where the electric power of the storage battery of the renewable energy base station is insufficient.
11. The coverage adjustment method for a renewable energy base station according to claim 9 , wherein: the adjustment request determining step includes a step of determining, by the renewable energy base station, that the adjustment to the coverage area of the renewable energy base station is required at least one of a case where the used amount of the network resource of the renewable energy base station is greater than a predetermined third threshold and in a case where the remaining electric power of the storage battery of the renewable energy base station is less than a predetermined fourth threshold.
12. The coverage adjustment method for a renewable energy base station according to claim 9 , wherein the adjustment request determining step includes a step of calculating, by the renewable energy base station, an outage probability of the renewable energy base station based on the network resource usage information and the storage battery electric power information of the renewable energy base station, and determining that the adjustment to the coverage area of the renewable energy base station is required when the outage probability is greater than a predetermined fifth threshold value.
13. The coverage adjustment method for a renewable energy base station according to claim 9 , wherein the adjustment request responding step includes a step of determining, by the each of the neighboring base stations, that the coverage area adjustment request from the renewable energy base station is allowed when a network resource of the each of the neighboring base stations is sufficient and the electric power of the storage battery of the each of the neighboring base stations is sufficient.
14. The coverage adjustment method for a renewable energy base station according to claim 9 , wherein the adjustment processing step includes steps of: notifying, by the renewable energy base station, the neighboring base stations of the determined adjustment amount to the coverage area of the each of the neighboring base stations; increasing, by the each of the neighboring base stations, the coverage area of the each of the neighboring base stations based on the received adjustment amount to the coverage area of the each of the neighboring base stations; and decreasing, by the renewable energy base station, the coverage area of the renewable energy base station based on the determined adjustment amount to the coverage area of the renewable energy base station after the coverage area of the each of the neighboring base stations is increased.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
March 5, 2014
May 24, 2016
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